Friday, October 28, 2011

Rancho Cucamonga DMV Statistics (10/28/11)

I went to pick up my personalized plates today and as soon I sat down, I decided the DMV wait is not going to fuck up my day so I collected data as I waited for my number to get called.  I wrote down the ticket number and window number as they were called out.  And I proceeded to do statistics analysis on the data I was collecting.  Before I knew it, my 1 hour and 17 minute wait was over and I got my JEDIISM plate.  I should probably send my data snapshot to the Rancho Cucamonga DMV office so they can see how they are serving the public, which employees are efficient (and which are slackers).  I understand there is variability in the type of service performed in each transaction but that is what statistical analysis is for -- to get an overall feel for how a sample set represents some general aspect of anything.  Not all the windows were open (probably blaming state budget cuts) and only 15 windows called out numbers.


Service WindowTotal CustomersAvg Time Per Customer
190:09
220:19
370:11
460:11
560:13
650:15
750:17
8110:06
960:08
10----
1160:11
1270:04
1360:09
1440:04
151One Sample
16----
17----
18----
19----
20----
2130:09





Total Customers = 84
Total Time Observed = 1 hr 12 min
Average Time Per Customer = 10 min
Most Customers Served = Window 8 (11 customers)
Faster Service Time = Window 14 (4 min per customer)
Least Customers Served  = Window 15 (1 customer)
Slowest Service Time = Window 2 (19 min per customer)

I think for the most part, DMV employees are hardworking.  I mean, I'd hate to be doing this for 8 hours a day, 5 days a week but just like with any other place of employment, there are slackers.  If Window 8 can handle 11 customers in the sample time, why is Window 6 only servicing less than half that at a rate of at least twice as slow.  If I were to slash more jobs, I would use these numbers to justify my cuts.

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